2216251756188 has 144 divisors (see below), whose sum is σ = 6071072847840. Its totient is φ = 678969188352.

The previous prime is 2216251756151. The next prime is 2216251756223. The reversal of 2216251756188 is 8816571526122.

2216251756188 is a `hidden beast` number, since 2 + 2 + 1 + 6 + 2 + 5 + 17 + 5 + 618 + 8 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 174652948 + ... + 174665636.

It is an arithmetic number, because the mean of its divisors is an integer number (42160228110).

Almost surely, 2^{2216251756188} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2216251756188, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3035536423920).

2216251756188 is an abundant number, since it is smaller than the sum of its proper divisors (3854821091652).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2216251756188 is a wasteful number, since it uses less digits than its factorization.

2216251756188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19396 (or 19391 counting only the distinct ones).

The product of its digits is 3225600, while the sum is 54.

The spelling of 2216251756188 in words is "two trillion, two hundred sixteen billion, two hundred fifty-one million, seven hundred fifty-six thousand, one hundred eighty-eight".